The iCog™ Light sensor uses the Intersil ISL29023 digital light sensor to measure ambient and infrared light. Users should consult the Intersil ISL29023 datasheet for full information about the sensor.

CognIoT™ iCog™ sensor boards come fitted with an ‘ID-IoT’ system chip. This is an EEPROM with 1kbytes of user storage (for calibration data etc.). The ID-IoT chip contains a unique 32-bit number to identify the sensor board.

The Sensor – ISL29023

• I2C Interface
• Interrupt output available
• 16-bit resolution
• 4 ranges
• o 0.015 to 1000 Lux
• o 0.06 to 4000 Lux
• o 0.24 to 16000 Lux
• o 0.96 to 64000 Lux
• -40C to +85C
• Ambient and Infrared light
• Self calibrating
• 11us to 90ms conversion rates
• Interrupt when light outside limits
• Close to human eye response

ID-IoT chip – eeprom

• Prewired for device baseI2C address
• Configurable for different addresses
• o A0,A1 address selection may be changed
• o Allows up to 4 iCogs™ on same bus
• o See application note for details
• 1KB user data space
• 32-bit Unique ID No. (UID)
• Option to fit pull up resistors on SDA/SCL lines if required

All iCogs are supplied with a 0.1" pin header for self assembly.